Technical Specification:
SIZE: 2"-24"
CLASS: 150LB-2500LB
MATERIAL: WCB, WCC, WC6, WC9, C5, C12, C12A, LCB, LCC, LC1, LC3, CF8, CF8M, CF3, CF3M, CF8C
Medium: Water, oil, gas, steam
Standards:
Design and Manufacture: API 6D, ASEM B16.34
Inspection and Test: API 6D, ISO 5208
End flange dimension: ASME B16.5(for NP ≤ 24); ASME B16.47 series B, API 605 or ASME B16.47 series A, MSS SP-44 (for NPS bigger than 24), DIN 2543~2550
Face to face and end to end: API 6D
Pressure-temperature ratings: ASME B16.34
Top-Entry Trunnion-Mounted Ball Valve is in-line repairable and assures bi-directional sealing of the valve with two independent floating seats. The design of the seats minimizes the torque required to operate the valve without losing the sealing power. This power is assured from zero differential pressure to the valve's maximum rated pressure. These quarter-turn valves to seal off both seats at the same time and to allow bleeding of the entrapped cavity pressure (DBB) with the ball in the closed position. The DBB feature allows for verifying that the seats are properly sealing.
Features
Trunnion-mounted ball: Features a fixed ball and floating seat rings. Bearings absorb the side load generated by the pressure acting on the ball.
Independent ball and stem: The ball and stem are independent to minimize the effect of side thrust from pressure acting on the ball.
Double block and bleed (DBB): Both seats hold their respective pressures independent of the body cavity pressure which is ideal to verify the sealing of the seats.
Self-relieving seat rings- two seat rings assure bi-directional sealing of the valves.
Soft-seated valves: In valves designed for standard service, a resilient material is inserted into the metal seat holder to provide a soft-seating acting in addition to the metal-to-metal seating between the ball and seat rings.
Optional Features
Emergency sealant injection stem seal and seat face
Metal seated valves
Double piston effect seats
Extended stem and fittings for below ground service
Numerous body, trim, seal area overlay and seal materials available
| Part name | Material |
| Body | WCB/A105/CF8M/F316/CF8/F304/CF3M/F316L/CF3/F304L/CD3MN/F51 |
| Sealing ring | Flexible graphite |
| Stem | F6a/A105+ENP/F304/F316/F304L/F316L/F51 |
| Bonnet | WCB/A105/CF8M/F316/CF8/F304/CF3M/F316L/CF3/F304L/CD3MN/F51 |
| Bolt | B7M/B8M |
| Lower lid | A105+ENP/F304/F316/F304L/F316L/F51 |
| Ball | (F304/F304L/F316/F316L/F51)+lonitriding/HardChromium/Nialloysurfacing |
| Packing | Flexible graphite |
| Spring | 17-4PH/Inconel series |
| Bushing | (304/316)+lonnitriding |
| Nut | B7M/B8M |
| Seat | (F304/F304L/F316/F316L/F51)+Stellite |
| Seal gasket | 304+Flexible graphite |
Fangyuan Valve Group Co. Ltd, seated at Wuxing Industrial Zone, Oubei, Yongjia County, so called as "Pump & Valve Village of China", close to the national scenic spot Nanxijiang River to the east and facing the downtown of Wenzhou City to the south, and established in 1998 with the former as Zhejiang Fangyuan Valve Manufacturing Co. Ltd, has got a great achievement via hard work and continual going forth ahead and become a magnate of plate gate valve from an unknown small enterprise and leads the future of this industry. Fangyuan Valve Group Co. Ltd was derived from Zhejiang Fangyuan Valve Manufacturing Co. Ltd in 2005 and holds 5 stock subsidiaries, three production bases in Wenzhou, Shanghai and Lishui and a cast base in Lishui, a total registered capital up to 4, 000, 000 USD, a total land area 110000m2, over 600 staff members, 60 of which are technicians, a digital process center and more than 350 sets of various middle and large equipments and an annual output up to 12000 tons.
This Group comes as a key enterprise among the said"Pump & Valve Village of China"and a well known enterprise in the national valve industry and specializes in the production of plate gate valve, gas valve, electric station valve etc., with the development, design and invention patent know-how up to the advanced technical level of the world and the leading level of the nation and some of the products used to replace the imported ones. This Group has been accredited to ISO9001, API6A/6D, CE, AZ etc., won the first prize of scientific advance of Zhejiang Province and elected as a member of the first-grade supply network of China Petroleum, a member of China Petrochemical Resource Market, a member of No. 1 Energy Network, a member for supply of the national electric power system, an appointed production enterprise by Chemical Equipment General Corp., a Wenzhou high-tech enterprise, a start enterprise of Yongjia County, one of the 30 powerful enterprises among the said village and a banking credit AAA grade enterprise in the successive recent years. It holds a powerful strength in the technical, management and market etc. Respects and a notable superiority in the severe market competition.
The products, approved by the nation and province early or late, have been elected as quality products of Zhejiang Province and well-known ones of Wenzhou. This Group follows the guide policy of"takeing people as the base, managing the company with laws, prospecting the enterprise with quality, continuing innovations"and makes the products well sold to all over the country and USA, Canada, the Middle East, Europe etc. World markets, greatly favored by the users therein. Therefore a solid basis has been made for the further open-up of the world market, for the making of Fangyuan brand, for the national industrial progression and for the great target to create a valve magnate of China and step forward to the 50 powerful valve companies of the world.
Slab gate valve: Slab gate and expanding gate, double sealed upstream and downstream design, double block and bleed open and closed design. Size: DN50~DN1400, pressure: PN16~PN420, handwheel, gear, electric, pneumatic.
Fully welded ball valve.
Forged steel valve. Material: A105, LF2, F11, F22, F5, F304, F316, F321 etc.
